I have a community realm, recently, every so often, it kicks everyone out...we log back in and we are set back HOURS from where we were. It has happened multiple times. I click save and exit every few minutes but it does not save. I am not even able to make a back up or change the amount of time between saves. I was in the end, my friends were making a villager trading hall...we keep getting set back again and again....
Related issues
Comments

Thank you for your report!
If you are all getting kicked from the realm this is almost certainly due to a crash. The crash itself should be getting forwarded to the devs automatically, however, if you can provide repeatable steps to reliable reproduce the crash feel free to log a report on that, ideally in the MCPE project with a single-player world.
We're tracking the rollback issue under MCPE-12347 so I've requested this report be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Please don't forget to use the search feature before submitting a bug to see if it has already been reported. The less time we spend linking duplicates means more time testing and confirming the bugs.
Quick Links:
📓 Issue Guidelines – 💬 Community Support Discord – 📧 Mojang Customer Support – 📖 Game Wiki